[New User Matt]

Hello,
First post here. I wonder what happened with the OP?

I want to do something similar.

Could you use dpdt relay (or an H bridge) for this?

Using a dpdt relay wired so that it is NC for one direction and the motor would move a screw and then stop when it hits a limit switch - at night time. Then using a photo resistor and a transistor to get the motor to move in opposite direction when the photo resistor has low resistance during the day and then stop when it hits a limit switch.

I think that would work, but (and what I don't understand) after the motor moves during the day and stops would it stay there during the day because the coil would stay energized because of the photo resistor until night when the relay goes back to the NC position? I don't think it would be good if the coils stayed energized during the day and constantly draw current especially if using batteries?

Or would it automatically move back into the night position because the relay is wired NC, and then this would keep repeating back and forth constantly during the daytime?

Of course the objective would be to move one direction at night and stop at a limit switch then move a different direction during the day and stop at a limit switch and then repeat daily.

I can't quite figure this out and if it would be the best way to proceed for something like this?

Any help you could give me would be Greatly Appreciated...I'm stumped!

Thanks,
Matt